Consin



Jan. 20, 1931. E. J. KEARNEY Re. 17,933

SLIDE ACTUATING MECHANISM Original Filed Aug. 3 91 3 Sheets-She et l INVE T7 I QMZM ATTORN EY Jan. 20, 1931. E. J. KEARNEY .SLIDE AOTUATING MECHANISM 3 Sheets-Sheet 2 Original il 1918 INVE O Jan. 20, 1931. E. J. KEARNEY Re. 17,933

SLIDE AGTUATING MECHANISM 3 Sheets-Sheet 5 Original Filed Aug- 1918 NV B i" Afi'ORNEY Reissued Jan. 20, 1931 UNITED STATES EDWARD J. KEARNEY, OF WAUWATOSA, WI GONSIN, ASSIGNOE 'IOV &

TRECKER CORPORATION, OF WEST .ALLIS, WISCONSIN, A CORPORATION OF WIS- CONSIN SLIDE-ACTUATING MECHANISM Original No. 1,450,598, dated April 3, 1923, Serial No. 248,155, filed. August 3, 1918.

reissue filed .Tune 21, 1930.

t My invention relates to improvements in slide actuating mechanism for milling machines.

The object of my invention is to provide convenient means for utilizing a motor to actuate the feed screw of the work table or car riage in order that the table may be shifted rapidly for feeding-in and work-removing operations.

These feed screws have ordinarily been actuated. manually by means of a hand wheel, except during cutting operations, at which times the screw is connected up with and driven from a main driving shaft or wheel through knuckle jointed transmission shafting or other complex connections adapted to permit the desired vertical and transverse adjustments of the work table without disconnecting the power.

Flexibleshafts or equivalent power transmitting connections reasonably satisfactory as a means for transmitting slow movements to the feed screw and work table, but they are not well adapted for the transmission of quick movements such as are desirable for feeding-in or retracting work. Either change s iced gearing, or independent shafting are required in such cases, and in either,

case, the structure of the milling machine 1s greatly complicated and the liability of injury to the workmen or a breakdown or impairment of the working parts is increased. For theee reasons, it has been customary to operate the feed screw exclusively by means of a hand'wheel for feeding-in or workretracting movements of the table, the power connections being employed only for the slow movements ofthe table required during cutting operations, notwithstanding the fact that manual feeding-in and retractingmovements are too slow to suit the requirements of modern machine shop practice.

Specifically, therefore, the object of: my invention is to provide means for utilizing an independently operated motor for actuating the work table during feeding-in and work retracting operations, or at least during the major portion of such operations, without interfering with the-use of the hand wheel when such motor is disconnected. It is also .Application for Serial No. 462,785.

my object to provide meanswhereby the relation ofthe motor to the feed screw will not be affected by vertical adjustments or transverse adjustments of the work table or its supporting slides, this object being accomplished in the construction illustratedby mounting the motor to travel with the work table in one or more of its adjusting movements, and preferably upon the table itself.

I preferably provide means whereby the motor will be automatically placed in driving connection with the screw when .the motor is connected with the source of power. I also prefer to proyide'means'for automatically disconnecting the hand wheel, which otherwise would acquire considerable momentum, thereby endangering the workman, and interfering with proper control by keeping thescrew in motion afterthe motor has been disconnected. But after the motor has stopped,

I prefer to allow the workman to manually re-connect the hand wheel, since in the con structlon shown this cannot be done without dlsconnecting the motor, and automatic means for shifting, the connections in this direction are unnecessary.

In a milling machine, the work table is vertically adjustable. Also a set of superposed slides are usually employed, whereby vertical, transverse and longitudinalmovements become possible in order that the work may be carried into the desired relation to the cut ting tool. By mounting the motor upon the end'of the work table in operative relation to the table actuating screw, and by supplying the power through a flexible connection,

such as a pipe or'hose in cases-where an air motor is employed, or a flexible cord in case electrical power is employed, I am able to supply the power tothe motor without diiii- 'culty, notwithstanding the va ious movements above mentioned;

In the draw1ngs--- Figure 1 1s a general View in front elevation of a milling machine to which my in- V vention is applied.'

Figure 2 is a detail view of my screw ac tuating attachment, partly in plan and part ly in section, exposing the motion transmit ting and shifting mechanism and a fragment I 50 the valve lever 17 is swung to the middle or of the table operating screw being illustrated. Figure 3 is a fragmentary side elevation showing my improved attachment secured to the end of the main slide or work table, in operative relation to the feed screw, the latter being shown in cross section. t t Figure 4 is a sectional view drawn generally on line 4-4 of Figure 3. i 5 Figures 5, 6 and 7 are sectional views illustrating, diagrammatically, a possible construction of the valve described herein.

v Like parts are identified by the same reference characters throughout the several views. A vertically movable slide 1 is mounted to travel in guides 2 ,projectingfrom the column 3, the guidesbeing dove-tailed .in cross section, and this slide being actuated. by a vertically disposed screw 4. A transversely movable. slide 5 isactuated by a screw 6, this slide 5 having a dove-tailed member 7 adapted to travel in a suitable cross channel formed in the vertically movableslicle 1.

A'main slide or work table 8 is mounted for movement on the slide 5 at right angles to the direction in which the slide. 5 travels, the table moving along its own longitudinalaxis. This carriage orwork table 8 is actuated by means of a screw 9 which'may be manually driven by a hand Wheel 10. All of these parts may be of any ordinary construction except as hereinafter described.

The motor 12 is mounted upon an extension orattachment 11 which is secured to the lefthand end of the carriage 8 adjacent to the hand wheel 10. It may be assumed to be a reversible compressed air motor of ordinary construction and therefore no detailed description is deemed necessary. Power is applied to the motor through a flexible hose 13 and duct 14 leading from a source of compressed air supply to a valve chamber 15 forming partof the attachment and in which a valve 16 is mounted and operated manually by means of a lever 17. When the valve 16 is adjusted to the positionB in'which it is illustrated in Figure. 2, air is supplied to the motor through duct 18 and is also supplied to a cylinder 19 through a duct 20 to actuate a plunger 21 and operate the gear shifting mechanism as hereinafter explained. lVhen neutral position A, indicated by dotted lines in Figure 2, the air supply to the motor will. be cut off and air will be permitted to exhaust from cylinder 19 through a port 22 in the valve chamber. i I v When lever 17 is swung to the position C also indicated by dotted lines in Figure 2, air willbe supplied to the motor through duct 25 and the motor will then be driven in the opposite direction from that in which it runs when lever 17 is in the fullline position and air is being supplied to themotor through duct 18. Air will also be supplied to cylinder 19 through duct 20, the valve 16 having two ports, one adapted for'registry with duct 20 when the valve lever is in the full line position B, and the other port being adapted for registry with said duct 20 when the valve lever is in position C. a

The motor shaft 28 is adapted to transmit motion to the screw 9 through the gear wheels 30, 31, and 32, the latter being mounted. upon screw shaft 9 to which it is keyed. The gear wheel 31 is adapted to slide longitudinally of its supporting shaft into and out of mesh with the gear wheel 32, but it remains continuously in mesh with gear wheel 30 on the motor shaft, this gear wheel being elongated. Gear wheel 31 is normally. out of mesh with the gear wheel 32 but when the valve 16 is operated to turnon the power to themotor 12, air under pressure will also be supplied to the cylinder 19 as above explained, thereby driving plunger 21 outwardly and this motion is transmitted through a shifting fork 27 to move gear wheel 31 to the position in which it is illustrated in Figures 2 and 4. Thereupon the motor will transmit rapid motion to the screw9 throughthe train of gears 30, 31, and 32, as above explained. This will continueuntil the power supply-is shut off 'byoperating the handle 17 to its dotted line position A, thereby shifting valve 16 toa position where it cuts off thesuppl'y of air to the motor. v

The fork 27 is rigidly connected with a cross head having a sleeve 40 mounted to slide upon a guide rod 41. This cross head has one arm 42 in the path of the plunger 21 and another arm 43 project-sdownwardly and looselyrengages in an annular channel 45 in a shifting collar 46 IDOHIL'CBCl to slide on shaft 9 and rigidly connected by a screw 50 with a sliding key 51 movably mounted in a longitudinal groove in said shaft 9. The outer end of this key 51 is connected by a screw 53 with a clutch member 54 adapted to engage clutch jaws 55 on the hub 56 of the hand'wheel 10,

said hub being rotatably mounted on a sleeve bearing member 60 fixed on shaft 9. It is therefore obvious that, when valve handle 17 is swung to the full line position in'which it is illustrated in Figure 2, the motor will not only be started, but plunger 21 will be simultaneously shifted to move gear wheel 31 into motion transmitting position and to also shift clutch member 54 outwardly tothe position in which it is illustrated in Figure 4, thereby allowing the screw shaft 9 and sleeve 60to rotate freely without actuating the hand wheel.

Dial 61 is graduated in accordance with the pitch or lead of screw 9, and is fixed on sleeve 60 whereby it indicates the amount of he air is simultaneously permitted :to extable movement from either source of motion.

lit)

haus't from cylinder 19. Thereupon the operator may connect up the hand wheel 10 with the screw shaft 9 by pushing inwardly on clutch member 54. When the'clutch member 54 is pushed inwardly, motion will be transmitted to gear wheel 31 to shift the latter out of operative position through the medium ofthe key 51, cross head l0, and forked shift-- ing member 27.

I claim 1'. In a milling machine, the combination with the work table and its actuating screw, of a motor, a manually operable member,

means for interchangeably connecting the a milling machine, of a screw for operating thesame longitudinally, a moton secured to one end of the work table, and shift gear mechanism for connecting and disconnecting the motor into and out of operatiae relation to the screw.

l. The combination with the work table of a. milling machine, of a transversely movable slide, a screw connected therewith and adapted to actuate the work table longitudinally, a screw actuating motor mounted on the work table and normally disconnected from the screw, a motor controlling lever also mounted on the table, and means con trolled by themotor controlling lever for connecting the motor with the screw simultaneously with a motor starting operation.

The combination with. the work table of a milling machine, of a transversely movable slide, a screw connected therewith and adapted to actuate the work table longitndinally, a screw actuating motor mounted on the work table and normally disconnected from the screw, motor controlling lev r mounted on the work table, means controlled by the motor controlling lever for connecting the motor with the screw simultaneously with a motor starting operation. said screw being provided with-a manually operable hand wheel, and means for disconnecting the handwheel when the motor is started.

,6. In a milling machine, the combination with the work table and its actuating screw, of a screw actuating motor secured to o end of the work table and adapted to be op atively connected and disconnected from the screv said'motor being provided with a power transmitting connection,

whereby power may be supplied to the motor under all conditions of work table adjustment.

7. The combination with a milling machine work table provided with means for adjusting the same vertically, of a motor mounted on the table, and manually controlled means for utilizing the motor to actuate-the table horizontally.

8. The combination w'tl a milling macninc work table provided with motion transmitting mechanism for actuating said table at working speed along various lines of move-- ment, of a source of power and independent motion transmitting mechanism distinct from said first named mechanism for actu ing said table for adjustment to and iii), along one of said lines of movement at a relatively rapid speed, whereby complicated motion transmitting connections are avoided.

9. The combination with a milling inachine work table provided with meansi'or adjusting same vertically, of a motor in ii relation to the work table, connections ada, ed to utilize the power, of the motor to actuate the table in one or more direct-ions, means for manually actuating the work table and power transmitting connections for actuati the same slowly during cutting operations. said power transmitting connections, manual connections, and motor connections being adapted for interchangeable use.

10. In a milling machine, the combination with a work table, of a table actuating motor secured thereto, and manual means for rendering the motor inoperative to actuate the table.

11. In a milling machine the combination with a bodily movable element, ofa work table mounted for an. independent sliding mov ment transversely of said element, driving connections between said table and said element,and a motor mounted for bodily move ment with said element and arranged to actuate said driving connection whereby said table may be caused many position of said element to slide transversely thereof without the use of complicated driving connections.

12. In a milling machine, a work table slidably adjustablein a plurality of directions and provided with a motor adapted to travel with it along one line of adjustment and to actuate the table from any position of suchadjustment along another lineof adjustment.

13. In a milling machine having a stationary column, a tool spindle rotatably supported from said column, a work table supportedtrom said column and movable in a plurality of mutually transverse paths one of which is transverse to the axis of said spindle, a screw operable for movement of said table in one of said paths, a manually operable device, a power operable device, each of said devices being alternatively connectible wither disconnectible from said screw, a manually op-- tionary column, a tool spindle rotatably sup ported from said column, a work table sn 1- ported from said column and movableln a plurality of mutually transverse paths'one J. Li

' interruptingmeans, and a motion transmit of which is transverse to the axis of said spinlle, a screw rotatable for movement t said table in one of said paths, indicating means including portions relatively movable and having one of said portions connected for movement from said screw to indicate the amount of table movement resultingfroni screw rotation, said screw extending axially from the point of connection of said portion for the engagement of nut means, a train for power rotation of said screw including a member connecting with said screw at a point spaced along the screw s in the one direction from said point of connection of said portion, a train for manual rotation of said screw including. a member connecting with said screw at a point spaced along the screw axis in the-other direction from said point'ot connection of saidportion, each of said trains being alternatively connectible with or d s connectible from said screw, 21' hand lever, and motion transmitting connections from saidlever and operable for a given direction of lever movement to disconnect one of said trains and to connect the other train.

15. In a milling machine having a 'sta tionary column, a tool spindle rotatably supported from said column, a work table sup ported from said column and movable-in, a plurality ofmutually transverserpaths one of which is transverse to the axis of saidspindle. a screw rotatable for movement ofsaid table in one of said paths, indicating means including an annular graduated dial having a bore coaxial with said screw, said screw having a portion extended through said bore and dial, a train for power rotation of said screw and providing power interruptmg means a hand operable member for rotation of said screw, clutch meansshiftable for alternativelv connecting or disconnecting said member. and screw whereby said member'may be stationary when said screw is rotated from said train, control means for operating said power ting connection from said control means and including an' element movable to shift said clutch means and extending through said bore. 1 h [16. In a milling machine, the combination of a rotatable toolspindle, a table a screw for relative movementot said table and spindle, a graduated dial having a bore-coaxial with said screw, said screw having a portion extending through said bore, apower train for. rotation of said screw, and providing power interrupting means, a hand operable member,

' clutch means shiftable to connect and to disconnect said member and screw, and means rising above said table at one side of a Vertical plane passing through a longitudinal table edge, a screw for movement of said table, a power trainior operation on said screw and including means for interrupting power thereto, a manually operable train connectible with said screw and' including clutch means shittable for interruption thereof, a hand lever having a portion positioned for movement on the other side of said vertical plane, a motion transmitting connection from said lever to said power interrupting means, and a motion transmitting connection from said lever to said clutch means, said connections being operative to interrupt said clutch means when said power train is operative. a a

18. In a milling machine having a stationary column, a tool'spindle rotatably supported from said column, a work table supported from said column and movable in a plurality of mutually transverse paths one of which is transverse to the axis of said spindle, a power transmission for movement of said operable member,having an axial bore, a train connectible with said member for table movement in the last mentioned path and including clutch means 'shiftable for disconnecting said train whereby said member may be non-rotatable when said table is power operated, a hand lever,;a motion transmit ting connection fromsaid hand lever to said power interrupting means, and another motion transmitting connection from said hand lever to said clutch and including a shiftable element passing through saidbore.

19. In a milling machine having a stationary column, a tool spindle rotatably supported from said column, a work table supported from said column and movable ina plurality of mutually transverse paths one of which is transverse to the axis of said spindle, a rotatable screw for movement of said table in one of said paths, a power train for operation or": said screw including means for interrupting power thereto, a manually operable train connectible with said screw including clutch means shiftable for interruption thereof, a graduated dial connected with saidscrew'in a manner adapted to indiv 10o table in one of said paths, a rotatable hand said power interrupting means, and a motion transmitting connection from said element to said clutch means said motion transmitting connections being operative to disengage said clutch means when said power train is operated.

20. In a milling machine having a stationary column, a tool spindle rotatably supported from said column,a work table supported from said column and movable in a plurality of mutually transverse paths one of which is transverse to the axis of said spindle, a rotatable screw for movement of said table in one of said paths, a power train for operation of said screw including means for interrupting power thereto, a manually operable train connectible with said screw including clutch means shiftable for interruption thereof, a graduated dial coaxial with and fixed for rotation with said screw, whereby to indicate table movement from either of said trains, a hand lever, a motion transmitting connection from said hand lever to said power interrupting means, and a motion transmitting connection from said hand lever to said clutch means, said connections being operative to disengage said clutch means when said power train is operative.

In witness whereof I hereto aifix my signature.

EDWARD J. KEARNEY. 

